<?php
    // +----------------------------------------------------------------------
    // | ThinkPHP [ WE CAN DO IT JUST THINK ]
    // +----------------------------------------------------------------------
    // | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
    // +----------------------------------------------------------------------
    // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
    // +----------------------------------------------------------------------
    // | Author: liu21st <liu21st@gmail.com>
    // +----------------------------------------------------------------------
    namespace think\response;

    use think\Response;

    class Json extends Response {
        // 输出参数
        protected $options     = [
            'json_encode_param' => JSON_UNESCAPED_UNICODE,
        ];
        protected $contentType = 'application/json';

        /**
         * 处理数据
         * @access protected
         * @param mixed $data 要处理的数据
         * @return mixed
         * @throws \Exception
         */
        protected function output($data) {
            try {
                // 返回JSON数据格式到客户端 包含状态信息
                $data = json_encode($data, $this->options['json_encode_param']);
                if ($data === false) {
                    throw new \InvalidArgumentException(json_last_error_msg());
                }
                return $data;
            } catch (\Exception $e) {
                if ($e->getPrevious()) {
                    throw $e->getPrevious();
                }
                throw $e;
            }
        }
    }
